Bifunctional storage-battery plate.



A. O. TATE.

v BIFUNGTIONAL STDRAGE BATTERY PLATE.

APPLICATION FILED SBPT.16, 1910.

Patented Apr. 29, 1913.

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BIPUNGTIONAL STORAGE BATTERY PLATE. APYLIUATIOK FILED SEPT. 16, 1910.

1 0 0 21 Patented Apr. 29, 19.13.

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3. TATE. OF TGRGNEQ, SIJ'TBIG, CANADA.

BIFUNSTIONAL STQEAGE-BATTERY PLATE.

d September TATE, Britain, end of Toronto, 'Gntsrio,

Dominion of uvc nisde a new and C156flil/lHVQDllOZl in liitunctionzil Stei- Battery Plates, of which the following specification,-

My invention is dir ageno of error inted U. f 25t 29 2 it has for provide a bifnnctionel of the typedisclosed in t patents, which the in e 20 the plat l; c 7

nrovldc means for g or securing the individual parts of completed plates together a more co react e d effective manner; third, to r VlCl? a plate of the type indicated 3h shall be practically free from damaging or weakening oxidation or 7' action at any pointupon th iante 1 774., T, ,c-N 1, J. d3 anode new cu ing the 26o oi chargt'ourth, t prov r plate which shall he s efi 'cctuull insulated at all or the parts where insulation is iecessiteted that there is practically no L lotion or dam in o" ing results, due to chargso construct the individual anode and ode strips that the active material in ei'iect Welded thereto,

otter the lite charged a suitihas cient number 0. lines, thereby better assuring the retaining or such active mater al in place.

o other at the hon oni, binding p material bc rider at the lateral sides oi the plate and all held together by two binding bolts lo- 0 te l )ectirely the opposite ends oi a the plan, I die material being secured oIIlSL- the lee s i the respective strips and icld in either i 'iiliQIlGZKVEd porous in- Specification of Letters Patent.

l aitented Apr, 2-9, 5 91 3. is, 1916. "Serial 1%. 582,344.

sulating strips, as disclosed in Patent No, or by pairs of relatively thin pen foroted mechanical segsrat made of such material as celluloid or the like and so constructed as to afford free circulation of the electrolyte and gases, as disclosed in Pet ent No. 926,710. l have ascertained in actual practice that Where the individual parts of such hifunctionel plates are bound together by bolts extending through the ends of the strip supportingtriiunes and the ends of: the anode strips next adjacent \to the interconnected lead-burned ends ther of, and through the like ends or the trainees and ends of the cathode strips next adjacent to the intercom nccted lead-burned ends thereof, there is not aim ys goon electricalgconnection, and that, t fore, the actual resistance of the inidual lead strips or such anodes and cathodes is necessarily relatively consider ably increased, and is oftentimes materially subsequently increased Where oxidation takes place between the anode strips and such bolts.

My present improvement, therefore, is de signed to overcome this defect and to ram terielly decrease the internal resistance and also prevent oxidation at the anode end of the plate. I efi'ect these materially impor in the strips for tne insertion of the bolts, as hereinbefore stated, thereby leaving thorn in both instances with the seine relative conductive capacity at all points throughout their entire lengths, and I accomplish this by securing all of the parts together by binding means exterior to the body of the plate, preferably by a binding cup at the lower end of the plate, which lower end l may odd I prefer to constitute the anode of the plate, and by a retaining band around the upper end thereof.

My invention Will be fully understood by referring to the accompanying drawings, in which,

' Figure 1 is e. full sized side elevetionul view of one of my improved bifunctionzil storage battery plates, illustrated as broken apart in the center, showing; also by a dotted line at the top of the plate the proper point of immersion in the electrolyte, one of the side binding plates and the binding therefor being shown in sectional view both the top and bottom. Fig. 2 is in plan view of Fig. 1 as seen looking thereet tent results by doing away with the holesgem the top toward rawing. Fig. 3 is a side elevational view illustrating the means for insulating the exposed part of the anode conductor from, the

topor lead-burned part of the cathode.

ing the corresponding element of the lower part of the plate together, the liquid insulating medium being shown in fused, form in'said cup. Fig. 7 is a side elet'ational view of one of the anode or cathode strips, said I terial to t hold it upon the upper and 2) extending t 'stantial difference figure illustrating. also the individual frame for holding or supporting ,such strip,the stri and the frame being shown as broken ap rt atfthe center. ig. 8 is an enlarged detail sectional view of one of the strips showing the manner of ifoviding a plu rality of sharp points on t e 0 posite faces thereof for the-purpose of e acting practical integllal connectionwith the active mae-strip'. v Referring now to the drawings in detail,

1 re resents the lead burned or top portion of t e cathode and 2, 2, the cathode strips, 3 representing the similar lead-burned portion of the anode and 4, 4, the anode strips. 5 re resents the anode conductor at the top of t e late which is connected directly to the lea -burned part 3 by a downwardly extending lead conductor 6, 7 being the ex osed cathode conductor integral with the ead-burned to 1. 8 and 9 represent bindmg plates ma e of insulating material and of preferably the same thickness or width as the parts of the plate proper. The plate 8 is provided with a. oove 10 (see Figs. 1 roughout its entire length and for receiving and securely holding the conductor 6 running to the lower en of the anode 3. 11 represents one of the individual frames of the anode or cathode, such as are fully described and claimed in the beforementioned patents. The only sub between these frames and those disclosed in the 'beforementioned patents is that the holes at the-opposite ends of such strips through which the binding bolts are passed, have been omitted as unnecessary. I

12 represents a rectangular-or box-shaped device made of insulating material, such as hard rubber, and provided on its under side with .lugs or extensions 13, 13 adapted to be sprung into position between the upper ends of the cathode strip 2 so as to securely left-hand surface thereof, and thereby insulate the cathode froim the anode conductor 5 at its exposed en the bottom, of the Fig. 3 from the bottom tois coatedupon or surrounds the anode eonductor 5 and extends downward a short distance on'the conduct r 6, the function of these parts being to prevent any possibility 14 represents an insulating medium which of a shortcircuit current flow between the anode and cathode at the point indicated.

15, 15 represent grooves out in the out- ,side faces of the upper ends of the insulat ing binding plates 8 and9, said grooves be ing for the purpose of receiving an locking in secure bound relation all of the intervening parts through the agency of a locking band 16 (see. Fig. 5). A similar band 16 is provided at the lower end adapted to be slipped over the ends of corresponding notches at the lower ends of the insulating plates 8 and9. Although a similar band maybe used at the lower end'I prefer to have this locking part in the nature of a cup of insulating material, as illustrated in Fig. 6 of the drawings, which cup is adapted to receive'a fused liquid insulating material, such as paraffin or pitch. or moreintermediate bands likelti might be similarly used, if desired, but I find two such bands have a suflicient binding eifect to effectually hold all of the parts together in proper relation.

17, 17 and 18, 18 represent respectively mechanical separators for holding the active and cathode stri s 2 and 4. and their individual supporting rames 11 from each other, these arts being identically like the correspon ing parts disclosed in Patent No. 926,710, except that as in the ease of the frames the bolt holes at the opposite ends thereof are dispensed with, as will be readily understood in view 0 scription of my novel means-of supporting all of the parts exteriorly.

19, 19, Fig. 1 is a dotted line representing the preferred depth of immersion of my novel plate in the electrolyte. y

In assembling the parts of my improved bifunctional st-orage battery plate the anode individual anode respectively into their corresponding sup porting frames 11, and the active material preferably lead oxid, is the opposite faces thereo 1, until the same is flush with the faces of the supporting frames in the manner patents. Said parts are then interrelated in the manner shown in the drawin s with the mechanical separators between t em, after which the anode strips are. lead-burnedtoether and the cathode strips corres 0ndingly lead-burned together, a lead con uctor 6 being attached to the part 3 and the exterior anode and cathode conductors 5 an 7 secured to the anodes and cathodes, as shown. The insulating device 12 s then l slipped into position and f the de-.

One

material in place and for separating the and the cathode strips 2 and 4 are drawn,

disclosed in my prior" 1 acked in place on I sions 13, 13 locked between the corresponding anode and cathode strips. The binding plates 8 and 9 are then located-in position thelccking band 16 of hard rubber or other insulating material, or of metal properly insulated is secured in place in' the grooves l5, 15. The lower ends of the plates 8 and t ere then drawn fil-nily together and the lower end or" the plate and said binding plates are then forced downward into the cup of the band 16, thus causing the fused insulating medium to be forced upward until all of the parts at the lower end of the effectually insulated; the insulamg n is tizen allowed to burden and the ate is for use.

F irg to Fig. 8 1 "ill describe snotnei i e novelty whicg constitutes an important element or the present invention, in which figure of the drawings is illustrated a longitudinal section of one of the anode or cathode strips before the active .sterial is spplied thereto. In the forming of these lead strips 1 prick, indent, or empret'erred manner so roughen oi the strip to which the active l is to be applied as to present a ly great plurality of sharp points 2 x on opposite sides thereof, leaving sufiicient marginal edges as shown in Fig. 7 to permit of the free insertion of suolredges into grooves in the frames 11. I have ascertained that an anode or cathode strip of this nature will practically integrally unite such active material to it during use,

bf? of fine efiect of the sharp points in co tinuous charging; in other words, I ,ertametl that in the use of plain lead .nth smooth surfaces the active material, such as lead oxid, will not become united thereto and will, therefore, have a ten :ncy to be scaled oft; whilestri'ps or l A cred hereinbefore descrlbed eilectually unite the active material during the process of charging that no hr, of disintegration durregard as one of the most ing use, and this I n'nportuut icatures oi my present Improvement.

L not limitmy invention to the socoiiic details of construction illustrated in lo ccompanying drawings as a number 'of 12 features thereof might be materially deun-tcd from and still come within the scope of my claims. i believe it is broadly new i me to unite all of the elements of a bnunctionsl storage battery plate together by exterior binding means, whether the sozne be in the nature of bands and a cap as illus- .zte'l in the drawings, or any means Wherebj; continuously applied exterior pressure will "do such a union of the parts as to scour nod themtogcthcr, and I desire to have it understood that my claims are ofithe most generic nature in this respect.

I am aware that it has heretofore been proposed to provide cups or pits in a storage broad enough to include such a structural arrangement, the sharp or pointed nature of the points 2 making it possible to effect an integral relation between the active material and the plate or strip, which union, so far as I am aware has never heretofore been e- :tected, such a structural strip or plate therefore, practically indestructible by virtue of any scaling effect between the active material and the supporting strip or plate.

Having thus described my invention What I claim and desire to secure by Letters Pat; ent of the United States is l. A bifunctional storage battery plate having a plurality of anode strips connected together at their lower ends to a common conductor extending to the top of the plate and surrounded with insulating material; a plurality of cathode strips connected to 'gether at their upper ends to a common conductor; separating media for said anode and cathode strips; binding plates of insulating material which are provided with grooved ends; together "with yielding means at the top of said strips, and a cup at the bottom thereof, the arrangement being such that the entire plate is expansible, substantially as described.

2. A bifunctional storage battery plate provided with insulating binding plates located at the opposite sides thereof; yielding means at the top and bottom for binding all of said parts together, the anode strips being all connected together by a conductor located in a groove within one of said-binding plates and the cathode strips being similarly connected together by a corresponding conductor located at the top of the plate; together with insulating means located at the top of the plate for insulating the anodes and cathodes from each other, substantially as described.

3. A bifunctional storage battery plate embracing a series of anode and cathode strips and two insulating binding plates located at the opposite sides thereof; in combination with elastic means located at the top and bottom of said binding plates for yieldingly holding them together. and a conductor located in a groove in one of said plates for electrically connecting the anode strips to the positive terminal of the battery, a similar conductor connecting the cathode strips with the negative terminal thereof, substantially as described.

4. A bitunctional storage battery plate embracing a plurality of anode strips and a plurality of cathode strips insulated from each other; a pair of insulating binding plates located at the opposite sides of the plate and held together by yielding means 1e s eutielly as described.

4; teem-w at the upper end thereof; a cup at h lower or et usu et ngimedi m; incom inw end yielding inolosiug' saicl binding plate. tion withfe binding b nd at the top, otthe and strips, the anode strips being connected plate, substantially as described. together at their lower end and to a con 7. In at bifunctional store, e; bpttery e dtuctor. locatedin agroove in one of said plurality oi anode encl eatho s trips'pro-. 25 binding plates and insulated from the, vided each with sharp points on its-ogposite' cathode strips, the latter being connected to face and each sustained by a frame; sepagether at their, uppereucl by a common con irati i g media between the frames; aetivemefi duetor located at the top, of the plate, sub,- vterial held in piece in integral, relation with v the fiaces at such strips, and means -or.--3'6 5. bifunetional: storage battery plate binding all ofsuph strips in operative, relaprovi d with binding bands; for holding all tion with each other, substantially as 'deofthe; parts, oi the late'together, and an scribed,

insulartlng cup filial? with an insulating 111,1 testimouy whereof;I;have signedmy 15. medium will b effectually insu ates one en name to his seeeifise ion in he p esence 0* 013- the plate, substantially as described. two subscribing wit gesses. V

6. A bifunctional storage battery plate ALFRED O. TATE;

provided with a bottom cup which sur-g 2;

.rounds all of the el ments at t wer end. (1., J

2o thereof and is seeureml thereto by a. 1.194- EL E; KEATme. 

